Apparatus for rolling bars from coils.



No. 781,760. PATENTED FEB. 7, 1905, J. BERGMANN. APPARATUS FOR ROLLING BARS FROM cons.

APPLICATION FILED MAR. 9, 1904.

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-2 53 INVENTOR. L 1 ffi$g No. 781,760. PATENTED FEB. 7, 1905.

' J. BERGMANN.

APPARATUS FOR ROLLING BARS FROM GOILS.

APPLICATION FILED MAR. 9, 1904.

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UNITED STATES Patented February f, 1905.

PATENT OFFICE.

APPARATUS FOR ROLLING BARS FROM COILS.

SPECIFICATION forming part of Letters Patent No. 781,760, dated February '7, 1905.

A li ation filed March 9,1904. $erial No. 197,255.

description thereof.

My invention relates to apparatus for rerolling coiled springs, its object being to provide for the utilization of worn-out railway and like steel springs. These springs, though made of high-priced steel, have, on account of their coiled shape, been heretofore con? sidered as having no value except for remelting and have commanded alow price as steel scrap. By my invention I am enabled to form steel bars from the same without the necessity of remelting, and as such steel bars command a high price I am enabled at small cost to bring the worn-out or scrap springs to suitable marketable form. In a companion application of even date herewith, Serial No. 197,256, 1 have described the method of utilizing such wornout springs. The present application relates to the apparatus.

To these ends my invention consists, generally stated, in the combination in apparatus for rerolling springs of housings having a set of grooved rolls and a springsupport mounted on the housings close to the roll-pass and adapted to feed the heated springs to the roll-pass and support the same during rolling and as the spring is unwound the worn-out springs being raised to a suitable rolling heat, one end of the same being drawn out in position to be fed to the rolls and the spring mounted upon the spring-support, so as to properly hold the same during the unwinding of the spring as it is drawn through the rolls, the spring being thus when so heated rolled into straight bar form.

It also consists in certain other improvements hereinafter described and claimed, such as forming the spring-support movable toward and from the rolls to feed the end of the spring set of rolls may be arranged for rolling different sizes of springs, the spring-support being adjusted laterally along the face of the rolls to bring it in position for feeding into diiferent sizes of roll-passes.

In the accompanying drawings, Figure 1 is a face view of a set of rolls having my improvement applied thereto. Fig. 2 is a vertical cross-section of the same. Fig. 3 is a horizontal section of the roll-housings, showing a plan view of the feeding mechanism; and Figs.- 4 and 5 are detail views.

The invention may be employed with any suitable form of rolls, it being preferred to employ aset of three-high rolls, as-shown, so that the same may be used not only for drawing out the heated spring, but for the subsequent reduction of the same to any gage or thickness desired.

The housings 1 2 are of suitable construction and support in the same the rolls 3 4 5, which are illustrated as driven by gears 6 7 8. It will be noticed that the roll-passes 9 illustrated are for the rolling of round bar and that they are arranged with the passes re-.

duced in size from left to right, so providing, according to the adjustment of the springsupport, for the feeding of the blank to the different-sized passes and its subsequent rolling to the thickness desired. Mounted on the housings is the spring-support l0,'\vhich is thus arranged to carry the spring as close aspossible to the roll-pass. It is preferably mounted upon a frame or carriage 11, which is laterally adjustable along the rolls, so as to bring the spring-support inposition for feeding to any particular pass. This frame 11 is shown as traveling on the guides 12 13, supported on the housings, and it is adjusted by means of the screw-bar 1 2, provided with the hand-wheel 15. As shown in the drawings, theframe or carriage 11 has suitable guides 16 17 supported thereon, such as by bolting at 18, which extend between the rolls as close as practicable to the roll-pass and are carried by the frame along in such position that they can feed to any of the roll-passes. It will be noticed that the guide 16 extends back from the rolls somewhat farther than the guide 17. This is considered desirable, so that when the straightened portion 19 of the heated spring 19, which is to be drawn into bar form, is put in position it can swing past the guide 17 and strike the guide 16.

To limit the inward movement of the springsupport 10, I provide it with a stop 20, which, as shown, extends down into a recess 21 in the carriage 11 and strikes a shoulder 22 thereon when the spring-support reaches its farthest inward position. For the adjustment of the spring-support to such position a suitable set-screw 23 is employed. To support the spring in position for feeding, I provide on the support the vertical standard 24, over which is placed a spool 25, which can turn with the spring and overcome friction in the feeding of the spring into the rolls.

By the employment of standards and spools of different thicknesses of wall the apparatus can be made to suit different sizes of springs.

In the employment of the apparatus above shown in the rerolling of old or worn-out steel springs the springs are to be heated in any suitable furnace, being brought to a good rolling heat, at which temperature they will of course be ductile, so that where one operator will grasp the spring-body with tongs and the other operator grasp the lower end thereof the end of the coil can be quickly straightened out, forming the straightened portion or extension 19, as shown in the drawings, and particularly in Figs. 2 and 3. The spring while still at arolling-heatis then dropped over the spool 25 of the s iring-support 10, and that support is quickly pushed forward, so as to feed the straightened extension 19 through between the guides 16 and 17 until it engages with the rolls which bite upon the same and draw the blank through. As the rolls draw the blank through the roll-pass the heated spring is gradually unwound on its support and in that way drawn out into straight or bar form. This bar can be used in any desired way. For example, if it is desired to roll itin small barsection it may at the same heat be fed to some of the smaller passes of the rolls and brought to finished bar form, or if it is to be subsequently hammered, such as for the purpose of forming tool-steel or for like purpose, it may be given only a single pass in the rolls. In eitherease it will be seen that the coiled steel spring is drawn out into bar form, so that it can be utilized for any purposes for which bar-steel of that section and quality would naturally be employed. As above stated, it may be subsequently hammered for tool-steel or it may at the same heat and through the same set of rolls or other set of rolls be rolled down into any desired section. It may after one or more passes be taken and recoiled into spring form of smaller section. By means of the apparatus I am thus enabled to form such bar-steel from worn-out or scrap-steel springs and bring such scrap-steel, which on account of its peculiar shape has only been considered of value for remelting, at small cost into bar form, which commands a high price in the trade.

VVhatI claim as my invention, and desire to secure by Letters Patent, is

1. In apparatus for rerolling coiled springs, the combination of rolls and housings therefor, and a spring-support arranged to hold thecoiled spring so that it'can rotate. said springsupport being located at one side of the plane in which the axes of the rolls lie and being movable toward and from said plane.

2. In apparatus for rerolling coiled springs, the combination of rolls and housings therefor, and a spring-support havingastandard for rotatably supporting the spring, said springsupport being located .at one side of the plane in which the axes of the rolls lie and being movable toward and from said plane.

3. In apparatus for rerolling coiled springs, the combination of rolls and housings therefor, and a spring-support having a vertical standard carrying a loose spool for rotatably supporting the spring, said spring-support being located at one side of the plane in which the axes of the rolls lie and being movabletoward and from said plane.

4:. In apparatus for rerolling coiled springs, the combination with rolls provided with a plurality of passes, housings therefor, of a frame or carriage located at one side of the plane in which the axes of the rolls lie and being laterally adjustable along said rolls, and a spring-support mounted on said frame and being movable toward said plane and arranged to support the coiled spring so that it can rotate.

5. In apparatus for rerolling coiled springs, the combination with the rolls and housings therefor, of a spring-support located at one side of the plane in which the axes of said rolls lie, said support being arranged to hold the spring so that it can rotate and being movable toward and from said plane, and a stop for controlling the movement of said support toward said plane.

6. In apparatus for rerolling springs, the combination with the rolls and housings therefor, of a spring-support having a vertical standard for carrying the spring and movable toward the rolls to feed the end of the spring to the same, and stationary guides in line with the roll-pass, one guide being longer and extending out farther from the roll-pass than the other.

In testimony whereof I, the said JOHN BERG- MANN, have hereunto set my hand. v

JOHN BERGMANN. IVitnesses:

ROBERT C. To'rTEN, G. (l. RAYMOND. 

